Ben and Kay Adam-Smith visit their architects Parsons + Whittley to discuss how to move their project forward. There are decisions to be made over which designs to pursue, what materials to embrace and how to address the various constraints (including bringing down the height of the building).

John Palmer from Enhabit explains what happens if you choose not to go all the way to Passivhaus standard, including how this impacts on cost, energy efficiency and comfort. He also outlines a best practice approach if you are going to build with Passivhaus principles.